Question

find the value of a if x + a is a factor of x2 + x2- 2x + a + 4​

Answer 1

p(x)=x²+x²-2x+a+4

g(x)=x+a=0(G(x)=0)

x=a

G(x)=p(x)

p(a)=a²+a²-2a+a+4

0=2a²-a+4

2a²-a=-4

2a²=--4+a

a=√-4+a/2